I've got no idea what price range you're looking at (was that meant to be �300?) but there loads of laptops on www.laptopshop.co.uk for a range of prices.
I stand correct, well a bit, I still reckon you don't get "good memory" for that sort of price. All the ones on the laptopshop web site under �300 (look at the inc vat figure) have really poor memory and the processors are really old also. Depends what you want to do with it.